Mathematics College

What is the measure, in degrees, of angle b?

Answers

Answer 1

The top angle is the same as the bottom angle, since they are vertically opposite angles.

b+20=40

b=40-20

b=20

It is also 20 degrees.

Answer 2

Answer:

Step-by-step explanation:

angle b+20 degree=40 degree(being vertically oppoite angles)

angle b=40-20

angle b=20

therefore angle b=20 degree.

Related Questions

SOMEONE PLEASE HELP!

Answers

The answer is D because you add all the data points values and divide by how many points you have. So in this situation when you add the data you get 135 and divide by the amount of data points you have which is 15. So you get 9

Compare the temperature change for the two masses of cold water (50 grams and 100 grams) when the same amount of hot water was added. What do you discover?

Answers

Answer:

Step-by-step explanation:

All other things being equal (and there are a lot of other things) the 50 gram mass will show a larger temperature

increase than the 100 gram mass.

Why?

The formula is the same from both masses of water (50 grams and 100 grams)

The amount of heat added is the same. (Instead of using hot water, we'll a hot plate on a very low temperature but above what they are now.).

We'll leave it on until we see a rise in temperature delta(t1) = 10 degrees

mc delta(t) = m1 * c * delta(t1)

m = 100

m1 = 50 grams.

c is going to be divided out

we'll solve for the ratio of delta(t) / delta(t1)

100 * delta(t) = 50 (delta(t1)

100 * delta(t) = 50*10

delta(t) = 50*10/100

delta(t) = 5 degrees.

Though this may look rather convoluted, the result is telling us is that delta(t1) for the 50 gram mass is twice as big as as for the 100 gram mass.

The 100 gram mass only rises 5 degrees.

The 50 gram mass rises 10 degrees.

Answer:

50 gram mass will show a larger temperature

increase than the 100 gram mass.

Step-by-step explanation:

50 gms water at 20 ⁰ C and 50 gms of water at 40⁰ C are mixed. Since the masses of the liquid at different temperatures are same, the answer is very easy and simple : average of 20⁰C and 40⁰C. that is: 30⁰C.

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1. x2 - 3x + 2
Type of factoring :
Factors:
Help is a test please

Answers

(x^2 - x) + (-2x + 2)
x(x - 1) - 2(x -1)
(x - 1) (x - 2)

x(x+1)+(x+1)(x+2)+(x+2)(x+3) solve the equation for x

Answers

Answer:

3x²+9x+8

Step-by-step explanation:

x²+x+x(x+2)+1(x+2)+x(x+3)+2(x+3)

x²+x+x²+2x+x+2+x²+3x+2x+6

x²+x²+x²+x+2x+x+3x+2x+2+6

3x²+9x+8

Answer:

[tex]3 x^{2}[/tex] + 9[tex]x[/tex] + 8

(This is an expression, not an equation so you can't find x with this expression. Equations have an = sign which can help isolate x on one side to find the value of x. This is the closest thing you could do for an answer for this expression.)

Step-by-step explanation:

x(x+1)+(x+1)(x+2)+(x+2)(x+3)

= (x)(x) + (x)(1) + (x)(x) + (x)(2) + (1)(x) + (1)(2) + (x)(x) + (x)(3) + (2)(x) + (2)(3)

= x^2 + x + x^2 + 2x + x+ 2 + x^2 + 3x + 2x + 6

= (x^2+x^2+x^2) + (x+2x+x+3x+2x) + (2+6)

= [tex]3x^{2}[/tex] + 9[tex]x[/tex] + 8

So first you expand the brackets and then you combine like terms.

I need a bit of help pls.

Answers

Answer:

#1. 150, #2. 650, #3. 2 PM to 4 PM #4. 8AM to 4PM (8 hours) #5. the frequency of weight in pounds #6. 22 cats

#7. 1 - 40 pounds #8. 11 - 20 pounds

i need help badly due today

Answers

Answer:

Solid A

Step-by-step explanation:

Help Please!

which of the following is the solution to the inequality below?

-6(4-x) = -4(x+1)

A. X=10
B. X=2
C. X>/=10
D. X>/=2

Answers

Answer:

The answer to this question is x=2

what is sin B?
A. 6/7.81 C. 5/7.81
B. 5/6 D. 7.81/6

what is cos B?
A. 6/7.81 C.5/7.81
B. 5/6 D. 6/5

what is tan B?
A. 7.81/5 C. 5/7.81
B. 5/6 D.6/5

Answers

Step-by-step explanation:

sinB=p/h

6/7.81A is yr ans

cosB=b/h

5/7.81C is yr ans

tan B= p/b

7/5D is yr ans

stay safe healthy and happy...

The distribution of the amount of money in savings accounts for Florida State students has an average of 1,200 dollars and a standard deviation of 900 dollars. Suppose that we take a random sample of 10 Florida State students and ask them how much they have in their savings account. The sampling distribution of the sample mean amount of money in a savings account is

Answers

Answer:

By the Central Limit Theorem, the sampling distribution of the sample mean amount of money in a savings account is approximately normal with mean of 1,200 dollars and standard deviation of 284.6 dollars.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Average of 1,200 dollars and a standard deviation of 900 dollars.

This means that [tex]\mu = 1200, \sigma = 900[/tex]

Sample of 10.

This means that [tex]n = 10, s = \frac{900}{\sqrt{10}} = 284.6[/tex]

The sampling distribution of the sample mean amount of money in a savings account is

By the Central Limit Theorem, approximately normal with mean of 1,200 dollars and standard deviation of 284.6 dollars.

The sampling distribution of the sample mean amount of money in a savings account is mean of 1,200 and standard deviation of 284.6 dollars.

Calculation of mean & standard deviation:

Since the distribution of the amount of money in savings accounts for Florida State students has an average of 1,200 dollars and a standard deviation of 900 dollars. And, a random sample of 10.

So here the mean should be $1,200

And, the standard deviation should be

[tex]= 900 \div \sqrt10[/tex]

= $284.6

learn more about mean here: https://brainly.com/question/9588526

8. True or False. The correlation coefficient is a measure of the strength of an
association between two variables.

Answers

The answer is trueeee

PLEASE PLEASE HELP ME!
Erin drinks one-half of a gallon of milk in four days. If she continues to drink the same amount every day, what is her daily rate of consumption?
A.18gallons/daily
B.27gallons/daily
C.78gallons/daily
D.2gallons/daily

Answers

Answer:

Step-by-step explanation:

1/2 ×4 =2

(x-1)/4=(x-4)/5 pls tell fast with steps
i will mark brainliest

Answers

Answer:

x= -11

Step-by-step explanation:

Find the area of each figure. Round to the nearest tenth if necessary.

Answers

Answer:

Solution given:

diameter(d)=6mm

base(b)=8mm

height (h)=5mm

Area of figure=area of parallelogram +area of semi circle

base*height+½π(d/2)²8*5+½*π×(6/2)²40+14.1454.4mm²Area :54.14mm²

for triangle

base[b]=6ft

height(h)=9ft

for square

length[l]=9ft

Area of figure=area of square +area of triangle

=l²+½*b*h=9²+½*6*9=81+27=108ft²Area: 108ft²

A spherical exercise ball has a maximum diameter of 30 inches when filled with air. The ball was completely empty at the start, and an electric air pump is filling it with air at the rate of 1600 cubic Inches per minute. The formula for the volume of a sphere is 4pi (r^3/3)

Part A Enter an equation for the amount of air still needed to fill the ball to its maximum volume, y, with respect to the number of minutes the pump has been pumping air into the ball, X.

Part B Enter the total amount of air, in cubic inches, still needed to fill the ball after the pump has been running for 4 minutes.

Part C Enter the estimated number of minutes it takes to pump up the ball to its maximum volume.

Answers

Answer:

A) A(t) = 4500*π - 1600*t

B) A(4) = 7730 in³

C) t = 8,8 sec

Step-by-step explanation:

The volume of the sphere is:

d max = 30 r max = 15 in

V(s) = (4/3)*π*r³ V(s) = (4/3)*π* (15)³

V(s) = 4500*π

A) Amount of air needed to fill the ball A(t)

A(t) = Total max. volume of the sphere - rate of flux of air * time

A(t) = 4500*π - 1600*t in³

B) After 4 minutes

A(4) = 4500*π - 6400

A(4) = 14130 - 6400

A(4) = 7730 in³

C) A(t) = 4500*π - 1600*t

when A(t) = 0 the ball got its maximum volume then:

4500*π - 1600*t = 0

t = 14130/1600

t = 8,8 sec

[tex]3^{x} = 4[/tex]
4^{y} = 12
estimate xy

Answers

9514 1404 393

Answer:

xy ≈ 2.3

Step-by-step explanation:

Logarithms can be used to find x and y.

3^x = 4

x·log(3) = log(4)

x = log(4)/log(3)

4^y = 12

y = log(12)/log(4)

Then xy is ...

xy = log(4)/log(3) × log(12)/log(4) = log(12)/log(3)

xy ≈ 1.079/0.477

xy ≈ 2.26

0.05/50
pls help me i don’t understand

Answers

Answer:

plug it into a calculator and you get 0.001

Step-by-step explanation:

50/50=1

then put in the decimal places to get 0.001

i also don’t understand this. explain in comment section.

(k+1)x^2-8kx+(3k+5) calculate the value for k

Answers

Answer:

Step-by-step explanation:

Let's simplify step-by-step.

(k+1)(x2)−8kx+3k+5

Distribute:

=(k)(x2)+(1)(x2)+−8kx+3k+5

=kx2+x2+−8kx+3k+5

Answer:

=kx2−8kx+x2+3k+5

180 lb 12 oz - 79.3 kg = ___________ kg

Answers

Answer:

[tex]180lb\ 12 oz - 79.3kg = 2.8kg[/tex]

Step-by-step explanation:

Given

[tex]180\ lb 12\ oz - 79.3kg[/tex]

Required

Solve

First, convert 180lb to kg

[tex]1lb \to 0.454kg[/tex]

[tex]180lb \to 180 *0.454kg[/tex]

[tex]180lb \to 81.7kg[/tex] -- to 1dp

Next, convert 12oz to kg

[tex]1oz \to 0.03kg[/tex]

[tex]12oz \to 12 * 0.03kg[/tex]

[tex]12oz \to 0.4kg[/tex] --- to 1 dp

So, the expression becomes:

[tex]180\ lb 12\ oz - 79.3kg[/tex]

[tex]81.7kg + 0.4kg - 79.3kg[/tex]

[tex]= 2.8kg[/tex]

Hence:

[tex]180lb\ 12 oz - 79.3kg = 2.8kg[/tex]

Can someone help me

Answers

y=mx+b
They give you the slope - 1/5
y=-1/5x+b
Now plug in the two coordinates of x and y to find b
7=-1/5(-5)+b
7=1+b
b=6
So the answer is y=-1/5x+6

30
7
0.7
dbksb
FS MATHS L2
Practise the Skill
1)
There are 14 women and 7 men in a café.
What is the probability that a person picked at random will be a woman?
Give your answer as a fraction in its lowest terms.
2)
Sally has a pack of playing cards and she chooses a card at random.
a) What is the probability that she picks an ace?
Give your answer as a fraction in its lowest terms.

Answers

Answer:

1) 2/1

2) 13/1

Step-by-step explanation:

A landscape designer has to construct a rectangular flower bed with a perimeter of 100 feet and the maximum possible area. What is the area of the flower bed

Answers

9514 1404 393

Answer:

625 square feet

Step-by-step explanation:

The greatest area of a polygon with a given perimeter is that of a regular polygon. A regular rectangle is one that has all sides the same length -- a square. The side length of a square with 100 ft perimeter is 25 ft. The area of a square with such a side length is

A = (25 ft)² = 625 ft²

The maximum possible area is 625 ft².

In the attached, x is the length of one side. The area versus side length is plotted. The maximum is seen to be 625 ft² for a side length of 25 ft.

Only got two days this is last resort wouldn’t mind help

Answers

Answer:

Option C.

Step-by-step explanation:

If we have two functions:

f(x) and g(x)

the product is given by:

(f*g)(x) = f(x)*g(x)

So, if here we have

f(x) = √(3*x)

g(x) = √(48*x)

And remembering that the square root is distributive, so:

√a*√b = √(a*b)

We can write:

(f*g)(x) = f(x)*g(x) = √(3*x)*√(48*x) = √(3*x*48*x)

= √(3*48*x*x) = √(144*x^2) = √(144)*√(x^2)

And here we can use that:

12*12 = 144, then √144 = 12

and

x*x = x^2, then √x^2 = x

So:

√(144)*√(x^2) = 12*x

Then the correct option is C.

Ms. Robinson gave her class 12 minutes to read. Carrie read 51/2 pages in that time. At
what rate, in pages per hour, did Carrie read?
1 1/10
22
27 1/2
66

Answers

Answer:

27 1/2

Step-by-step explanation:

tessa burned 357 calories in 42 minutes on the elliptical. ashley only spent 30 minutes on the elliptical and burned 267 calories. who burned calories at a faster rate

Answers

Ashley burned calories faster because she burned almost 9 calories per minute and Tessa only burned 8.5 per minute

Please also on this 1

Answers

don’t know if you need all of them :) but..

1a) 6.49
b) 2.75
c) 18.33
d) 0.19

2a) 1.33
b) 29.96
c) 18.75
d) 54.99

3) 5

4a) 37.45
b) 7.50
c) 73.22
d) 2.28

5a) 109.98
b) 30
c) 6.84
d) 67.41

6) 3.39

hope this helps !!

Thank you Brainly for helping me beat edg2020-2021

Answers

Answer:

Wat does that mean?

Step-by-step explanation:

i would have failed if brainly didn’t exist

for his long distance phone service, lamar pays a 6 dollar monthly fee plus 8 cents per minute. last month, lamars long distance bill was 14.96. for how many minutes was lamar billed

Answers

Answer:

112

Step-by-step explanation:

14.96-6 = 8.96, divide 8.96 by 0.08 and it comes out to 112 which would be how much minutes in total Lamar used.

0.08 being cents per minute

8.96 being the total amount used after the initial $6 monthly fee

C. 20 people show up to the party, and Robert decides to give them each the
same amount of pizza. How much pizza does each person get?

Answers

Answer:

Step-by-step explanation:3/5 of the pizza

Help me find the volume of the figure.

Answers

Answer:

Step-by-step explanation:

since it is a cuboid use this formula

volume of a cuboid=l*w*h

=2*8*3

Compare the two leagues and predict which league would be more likely to win a game. 2 tables. Table 1 is a 2-column table with 5 rows. Column 1 is labeled H R with entries 34, 45, 62, 92, 111. Column 2 is labeled W with entries 50, 65, 72, 83, 105. Table 2 is a 2-column table with 5 rows. Column 1 is labeled H R with entries 72, 80, 88, 97, 109. Column 2 is labeled W with entries 79, 84, 87, 89, 102.

Answers

Answer:

Step-by-step explanation:

Answer:

edge 2021

Step-by-step explanation:

The team from the second league would be more likey to win becasue teams in taht league have more consistent, and mostly greater, numbers of home runs and winning games. Data for teams in the second league also do not show any outliers.

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